Garuda - Garba Rujukan Digital

PENGURANGAN KADAR KLORIDA DALAM PEMBENTUKAN 3-MCPD MELALUI PROSES CPO WASHING DI UNIT REFINERY INDUSTRI MINYAK GORENG Putra, Ilham Adijas; Ulia, Hasnah
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 18, No 2 (2021): VOL 18 NO 2 DESEMBER 2021
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/sainti.v18i2.305

The effectiveness of washing crude palm oil (CPO) with demineralized water at 90 ºC in reducing chloride levels, a key precursor to the formation of carcinogenic 3-MCPD esters, has been evaluated. The washing process, carried out with a capacity of ±50 tons/hour and a 6% water dosage, resulted in a 60% reduction in chloride levels, with a maximum reduction of 75.3% observed on the first day of experimentation. Variability in chloride reduction was influenced by the quality of raw materials and storage methods. However, organic chloride, which is covalently bonded to CPO molecules, could not be removed by this process. The findings indicate the need for additional methods to address organic chloride and improve contaminant removal efficiency in palm oil production.

Evaluasi Indeks Tarik dan Indeks Sobek pada Bleaching Pulp: Pengaruh Hidrogen Peroksida (H2O2), Klorin Dioksida (ClO2) dan Suhu Ulia, Hasnah; Nurmalasari, Enny; Yahya, Agung Kurnia; Rahayu, Puji
REACTOR: Journal of Research on Chemistry and Engineering Vol 5, No 1 (2024): Published in June 2024
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v5i1.110

Indonesia is one of the leading Pulp and paper producers globally, with an estimated annual growth rate of 3.5%. However, domestic production has not yet fully met the domestic needs and export demand for paper. Currently, hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) are the primary bleaching agents used in Pulp and paper production. This research aims to evaluate the effects of H2O2, ClO2, and temperature on product quality parameters, specifically the tensile and tear indices. The variations of ClO2 used are 2%, 0.4%, and 0.7%; H2O2 concentrations are 0.1%, 0.2%, and 0.4%; and the temperatures used are 75°C and 85°C. The study found that the addition of ClO2 at a concentration of 0.7% resulted in the highest tensile index of 76.9 N.m/g and a tear index of 3.5 m.N.m²/g. The addition of H2O2 at a concentration of 0.1% resulted in a tensile index of 83.9 N.m/g and a tear index of 9.4 m.N.m²/g. Temperature variations did not significantly affect the tensile and tear indices, with the tensile index reaching 9.35 m.N.m²/g. The addition of H2O2 is essential as it enhances the bleaching process and improves the mechanical properties of the Pulp, which is beneficial for optimizing bleaching conditions to enhance product quality, thus meeting both domestic needs and export demands.

REVIU MODEL DISTILASI REAKTIF DALAM PRODUKSI ETIL ASETAT Jerry, Jerry; Ulia, Hasnah
JURNAL TEKNOLOGI KIMIA MINERAL Vol 1 No 1 (2022): JURNAL TEKNOLOGI KIMIA MINERAL
Publisher : Politeknik ATI Makassaar

Pengembangan proses pemisahan dan reaksi secara simultan pada kolom distilasi mempunyai kelebihan yaitu, biaya investasi yang murah, dapat menggeser pembatasan oleh azeotrop, tingkat konversi yang lebih tinggi dibandingkan dengan proses pemisahan dan reaksi secara terpisah. Kelebihan yang ditawarkan distilasi reaktif menjadi ketertarikan sendiri untuk dikaji. Pemodelan distilasi reaktif melibatkan beberapa peristiwa penting, yaitu kesetimbangan fasa, kesetimbangan reaksi dan perpindahan panas. Model yang telah dikembangkan menggunakan persamaan neraca massa dan neraca energi keadaan unsteady state dan mengasumsikan terjadi kesetimbangan fasa dan reaksi setiap tahap kolom distilasi. Model yang telah dikembangkan menggunakan persamaan kinetika reaksi setiap tahap dan parameter nilai aktivitas ᵞ yang paling sesuai untuk kondisi Etil Asetat adalah UNIFAC.

EVALUASI KINERJA PLATE HEAT EXCHANGER DI REFINERY PLANT INDUSTRI MINYAK GORENG Yahya, Agung Kurnia; Romigo, Rivaldo; Rahayu, Puji; Aini, Apsari Puspita; Ulia, Hasnah
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 20, No 1 (2023): VOL 20 NO 1 JUNI 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/sainti.v20i1.203

Plate Heat Exchanger (PHE) is an element that has an important role in energy efficiency in PT. XYZ. At PT. XYZ there is a problem with the PHE device, where the flow rate of the hot fluid in the device tends to decrease over time, this can cause the heat transfer between the hot fluid and the cold fluid to be sub-optimal resulting in a decrease in the performance of the device. The performance of PHE equipment can be seen from its effectiveness, if PHE performance decreases it can cause an increase in energy consumption so that the cost incurred also increases. This study aims to calculate the effectiveness of PHE type 605A used as a heat exchanger between crude palm oil and bleached palm oil refined at PT. XYZ and current effectiveness is around 81.77% - 86.13%. However, the efficacy of PHE decreases over time and is expected to decrease to 75% on day 11. Recommendations that can be given in this study are routine maintenance and cleaning, real-time monitoring of the performance of the plate heat exchanger, and a review of the workload of the plate heat exchanger system.

Pelatihan Pengolahan Minyak Goreng Bekas Industri Kerupuk Kulit Menjadi Sabun Padat di Kelurahan Kamang Magek Ulia, Hasnah; Rahayu, Puji; Rahmad, Dedy; Rosalina, Rosalina; Putri, Dwi Kemala; Nurrahmi, Rara
Journal of Industrial Community Empowerment Vol 1, No 1 (2022): Published in April 2022
Publisher : Politeknik ATI Padang

Kamang Magek adalah salah satu kelurahan di kabupaten Agam, Sumatera Barat yang Sebagian besar warganya adalah petani dan wiraswasta. Wiraswasta yang banyak berkembang di daerah Kamang Magek adalah produksi kerupuk kulit atau “Karupuak Jangek”. Kerupuk ini berbahan baku kulit sapi ataupun kerbau, dimana berdasarkan data Biro Pusat Statistik Sumatera Barat untuk daerah Agam mempunyai unit usaha industri kecil sandang dan kulit sebanyak 1.501 unit usaha formal dan 569 unit usaha non formal termasuk di Kamang Magek. Dari hasil produksi tersebut banyak dihasilkan minyak goreng bekas sebesar ±1000 L perminggunya. Salah satu cara meningkatkan mutu limbah minyak goreng tersebut adalah dengan mengolahnya menjadi suatu inovasi, salah satunya sabun padat. Sabun padat terbuat dari lemak netral dari minyak yang telah keras, dengan proses hidrogenasi, menggunakan alkali NaOH. Terlebih lagi, di masa pandemi saat ini sabun padat banyak dibutuhkan untuk mengurangi potensi penularan COVID-19. Jika kecamatan Kamang Magek mampu memproduksi sabun dari limbah minyak goreng yang dihasilkan maka akan meningkatkan nilai jual dan menambah pendampatan masyarakat setempat.

The Production of Polyhydroxyalkanoate (PHA) Bioplastic from Palm Oil Mill Effluent (POME) using Pseudomonas aeruginosa Ulia, Hasnah; Samah, Selfa Dewati; Nurmalasari, Enny
Jurnal Kimia Sains dan Aplikasi Vol 28, No 7 (2025): Volume 28 Issue 7 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.7.387-395

Biodegradable plastics were continuously developed to replace non-degradable plastics. One type of bioplastic that was used was poly(hydroxyalkanoate) (PHA). In this study, PHA was synthesized using Palm Oil Mill Effluent (POME) and the bacterium Pseudomonas aeruginosa through a fed-batch (aerobic–anaerobic) fermentation process over six days. The study aimed to evaluate the use of POME as the sole carbon source for PHA synthesis by Pseudomonas aeruginosa through a fed-batch aerobic–anaerobic fermentation process. The total substrate volumes used in this study were 30, 60, and 90% (v/v), which were gradually added (fed-batch) at rates of 5, 10, and 15% (v/v)/day over the six-day fermentation period. The analytical results showed significant reductions in BOD (Biological Oxygen Demand), COD (Chemical Oxygen Demand), ammonia (NH3), and total suspended solids (TSS) after the fermentation process, indicating that organic and chemical compounds were degraded during fermentation. PHA production from POME showed that the maximum yield occurred on the third day, with 16.89 g/kg dry biomass and a PHA concentration of 9.089 wt% (1.53 g/kg) from a total substrate volume of 9 L. The fermentation process reached the exponential phase on the third day, declined on the fourth day, and stabilized by the sixth day, with an average yield of 5.248 wt%. Characterization using X-ray diffraction (XRD) confirmed that the produced PHA had a structure consistent with standard PHA. Further analysis of water absorption and biodegradability showed fluctuating results, with the best performance observed at a 5% concentration, indicating low water absorption and good biodegradability. In addition, the bioplastic produced had a tensile strength of 554.32 MPa and a modulus of elasticity of 5834.95 MPa.

Modification of Bentonite with Nano Silica Oxide (SiO₂) for the Purification Process of Crude Palm Oil (CPO) Nurmalasari, Enny; Yahya, Agung Kurnia; Aini, Apsari Puspita; Ulia, Hasnah
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 3 (2025): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v7i3.448

The efficiency of β-carotene removal is a critical parameter in commercial refining, as it directly influences the overall process effectiveness; therefore, the selection of appropriate bleaching agents is crucial. The limited effectiveness of Bleaching Earth (BE) in refining crude palm oil (CPO) to meet color standards poses a challenge. To improve BE's performance, natural bentonite was modified with nano-SiO₂ through a facile-mixing method. Bentonite was modified with nano-SiO2 in concentrations of 5, 10, and 15% w/v, to assess the effectiveness of this modified bentonite in the CPO bleaching process. Bleaching was conducted at 90°C with a BE concentration of 0.5% w/v for 30 minutes. Characterization confirmed successful integration of modified Bentonite indicated by enhancing surface area. Bentonite modified with 15% nano-SiO2 showed a significant improvement in bleaching performance, reducing β-carotene content to 553.84 ppm compared to 630.36 ppm with unmodified bentonite. The red/yellow color value also decreased to 1.5/15 from the original CPO value of 2.1/21, along with a reduction in FFA value. The results of this study indicate that modifying bentonite with nano silica oxide offers a solution to reduce the amount of bentonite used in the bleaching process.

Evaluasi Indeks Tarik dan Indeks Sobek pada Bleaching Pulp: Pengaruh Hidrogen Peroksida (H2O2), Klorin Dioksida (ClO2) dan Suhu Ulia, Hasnah; Nurmalasari, Enny; Yahya, Agung Kurnia; Rahayu, Puji
REACTOR: Journal of Research on Chemistry and Engineering Vol. 5 No. 1 (2024)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v5i1.110

Indonesia is one of the leading Pulp and paper producers globally, with an estimated annual growth rate of 3.5%. However, domestic production has not yet fully met the domestic needs and export demand for paper. Currently, hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) are the primary bleaching agents used in Pulp and paper production. This research aims to evaluate the effects of H2O2, ClO2, and temperature on product quality parameters, specifically the tensile and tear indices. The variations of ClO2 used are 2%, 0.4%, and 0.7%; H2O2 concentrations are 0.1%, 0.2%, and 0.4%; and the temperatures used are 75°C and 85°C. The study found that the addition of ClO2 at a concentration of 0.7% resulted in the highest tensile index of 76.9 N.m/g and a tear index of 3.5 m.N.m²/g. The addition of H2O2 at a concentration of 0.1% resulted in a tensile index of 83.9 N.m/g and a tear index of 9.4 m.N.m²/g. Temperature variations did not significantly affect the tensile and tear indices, with the tensile index reaching 9.35 m.N.m²/g. The addition of H2O2 is essential as it enhances the bleaching process and improves the mechanical properties of the Pulp, which is beneficial for optimizing bleaching conditions to enhance product quality, thus meeting both domestic needs and export demands

Evaluasi Indeks Tarik dan Indeks Sobek pada Bleaching Pulp: Pengaruh Hidrogen Peroksida (H2O2), Klorin Dioksida (ClO2) dan Suhu Ulia, Hasnah; Nurmalasari, Enny; Yahya, Agung Kurnia; Rahayu, Puji
REACTOR: Journal of Research on Chemistry and Engineering Vol. 5 No. 1 (2024)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/

Indonesia is one of the leading Pulp and paper producers globally, with an estimated annual growth rate of 3.5%. However, domestic production has not yet fully met the domestic needs and export demand for paper. Currently, hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) are the primary bleaching agents used in Pulp and paper production. This research aims to evaluate the effects of H2O2, ClO2, and temperature on product quality parameters, specifically the tensile and tear indices. The variations of ClO2 used are 2%, 0.4%, and 0.7%; H2O2 concentrations are 0.1%, 0.2%, and 0.4%; and the temperatures used are 75°C and 85°C. The study found that the addition of ClO2 at a concentration of 0.7% resulted in the highest tensile index of 76.9 N.m/g and a tear index of 3.5 m.N.m²/g. The addition of H2O2 at a concentration of 0.1% resulted in a tensile index of 83.9 N.m/g and a tear index of 9.4 m.N.m²/g. Temperature variations did not significantly affect the tensile and tear indices, with the tensile index reaching 9.35 m.N.m²/g. The addition of H2O2 is essential as it enhances the bleaching process and improves the mechanical properties of the Pulp, which is beneficial for optimizing bleaching conditions to enhance product quality, thus meeting both domestic needs and export demands.

Pelatihan Pengolahan Minyak Goreng Bekas Industri Kerupuk Kulit Menjadi Sabun Padat di Kelurahan Kamang Magek Ulia, Hasnah; Rahayu, Puji; Rahmad, Dedy; Rosalina, Rosalina; Putri, Dwi Kemala; Nurrahmi, Rara
Journal of Industrial Community Empowerment Vol. 1 No. 1 (2022)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/jice.v1i1.92

Most of the residents of Kamang Magek work as entrepreneurs. The type of business that is developing a lot is the production of skin crackers or known as "Karupuak Jangek" on a household scale. These crackers are made from cow or buffalo skin, which produces approximately 300 kg of crackers per household center. From these productions, a lot of used cooking oil is produced by ± 1000 L per week. One way to improve the quality of the cooking oil waste is to process it into an innovation, one of which is solid soap. Solid soap is made from neutral fats from oils that have been hardened, by a hydrogenation process, using alkaline NaOH. What's more, during the current pandemic, solid soap is needed a lot to reduce the potential for COVID-19 transmission. Currently, the community already has the expertise to process used cooking oil to be used as the basic material for making solids. These skills can become a new hobby for some people who are able to increase the selling value of waste.

Title

Found 11 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 11 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 11 Documents
Search